diff --git a/lib/prepare-system.sh b/lib/prepare-system.sh
index b6aba52..d143f91 100755
--- a/lib/prepare-system.sh
+++ b/lib/prepare-system.sh
@@ -67,6 +67,9 @@ case "$PROJECT" in
 	dhki)
 		site_configuration_repository_middle="git.verbis.dkfz.de/dhki/"
 		;;
+	nngm)
+		site_configuration_repository_middle="git.verbis.dkfz.de/nngm/"
+		;;
 	minimal)
 		site_configuration_repository_middle="git.verbis.dkfz.de/minimal-bridgehead-configs/"
 		;;